Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff89bd2f6780ea03…

MALICIOUS

PDF

117.1 KB Created: 2020-08-28 02:19:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05e83ae6d5f48c8d48574141aa492af3 SHA-1: 7b31f784ecbd4867b1617d893f6dceb0f5dab715 SHA-256: ff89bd2f6780ea03a94ef289ac38cc35fac28d9b1c72b4ff8e08995c0fe4e060
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, suggesting an attempt to lure users to external malicious sites. The ML classifier also strongly indicates maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=logros+y+avances+en+los+procesos+pedagogicos
    • http://rogesof.thebrowneyedsusan.com/uploads/1/3/2/7/132710797/5275997.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/sederik.pdf
    • https://cdn.shopify.com/s/files/1/0448/9442/1147/files/a_practical_english_grammar_exercises_1.pdf
    • https://cdn.shopify.com/s/files/1/0433/0120/8232/files/theory_of_machines_and_mechanisms.pdf
    • https://cdn.shopify.com/s/files/1/0432/6634/3072/files/john_deere_350_dozer_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/git_force_pull.pdf
    • https://cdn.shopify.com/s/files/1/0436/9127/8486/files/45420659193.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/gegafapu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1095/7210/files/56505920082.pdf
    • https://cdn.shopify.com/s/files/1/0463/5970/7803/files/kms_activator_ms_office_2016.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017513.bin
7469329d6e0adf54e8338b23baa2bf25c7a7e8fd10fa6adf1d08052b51695a6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17513 5344 bytes
font_01_sfnt_off00018759.bin
26c6f9bbc13277e39bce5b2ab1a5a05d7c8b6aca9907a11cb0227c41cb7d3012		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18759 11740 bytes
font_02_sfnt_off0001ada4.bin
08ae0081455a1ce29548de60432ceb898419c55e5c870f80e0bcadafd946c183		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1ADA4 16840 bytes

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